ETSI EN V1.2.2 ( ) European Standard (Telecommunications series)

Transcription

1 EN V1.2.2 ( ) European Standard (Telecommunications series) Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 1: Call Identification (CI)

2 2 EN V1.2.2 ( ) Reference REN/TETRA Keywords CLIP, CLIR, COLP, COLR, TETRA, V+D 650 Route des Lucioles F Sophia Antipolis Cedex - FRANCE Tel.: Fax: Siret N NAF 742 C Association à but n lucratif enregistrée à la Sous-Préfecture de Grasse (06) N 7803/88 Important tice Individual copies of the present document can be downloaded from: The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on printers of the PDF version kept on a specific network drive within Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other documents is available at If you find errors in the present document, please send your comment to one of the following services: Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute All rights reserved. DECT TM, PLUGTESTS TM and UMTS TM are Trade Marks of registered for the benefit of its Members. TIPHON TM and the TIPHON logo are Trade Marks currently being registered by for the benefit of its Members. 3GPP TM is a Trade Mark of registered for the benefit of its Members and of the 3GPP Organizational Partners.

3 3 EN V1.2.2 ( ) Contents Intellectual Property Rights...7 Foreword...7 Introduction Scope References Definitions, symbols and abbreviations Definitions Symbols Abbreviations Signalling protocol for the support of SS-CLIP and SS-CLIR SS-CLIP and SS-CLIR description SS-CLIP service description General SS-CLIP services offered over the TNSS-SAP INFORM1 indication Parameter description SS-CLIR description General SS-CLIR services offered over the TNSS-SAP INVOCATION request INFORM2 indication INFORM3 indication Parameter description SS-CLIP and SS-CLIR operational requirements SS-CLIP operational requirements Served user MS/LS Originating SwMI Group controlling SwMI Terminating SwMI SS-CLIR operational requirements Served user MS/LS Originating SwMI Group controlling SwMI Terminating SwMI SS-CLIP and SS-CLIR coding requirements General on coding SS-CLIP and SS-CLIR PDUs U-SETUP PDU EXTERNAL NUMBER PDU TETRA PDU information element coding for SS-CLIP and SS-CLIR U-SETUP CLIR (RESTRICT) Notification indicator information element Numbering plan identifier Type of number Screening indicator INFORM2 CLIR OVERRIDE PDU INFORM3 CLIR OVERRIDE PDU SS-CLIR PDU Type Messages SS-CLIP and SS-CLIR state definitions SS-CLIP state definitions States at the served user MS/LS States for SS-CLIP invocation and operation at the group controlling SwMI...19

4 4 EN V1.2.2 ( ) States for SS-CLIP invocation and operation at the served user SwMI SS-CLIR state definitions States at the served user MS/LS States for SS-CLIR invocation and operation at the group controlling SwMI States for SS-CLIR invocation and operation at the served user SwMI SS-CLIP and SS-CLIR signalling procedures SS-CLIP signalling procedures Actions at the originating SwMI for SS-CLIP Normal procedures Exceptional procedures Actions at the terminating for SS-CLIP Normal procedures Actions at the group controlling SwMI Actions at the participating SwMI Exceptional procedures SS-CLIR signalling procedures Actions at the originating SwMI for SS-CLIR Normal procedures Exceptional procedures Actions at the terminating SwMI Exceptional procedures SS-CLIP and SS-CLIR impact of interworking SS-CLIP SS-CLIR Protocol interactions between SS-CLIP and SS-CLIR and other supplementary services and ANFs Interaction of SS-CLIR with SS-CLIP Talking party identification With SS-CLIP With SS-CLIR Interactions with ISI Mobility Management (ANF-ISIMM) of SS-CLIP SS-CLIP profiles SS-CLIP information SS-CLIP migration original profile SS-CLIP migration original profile response information element Operation of Interaction with ISI MM of SS-CLIP Interactions of SS-CLIR with ISI Mobility Management (ANF-ISIMM) SS-CLIR Profiles SS-CLIR information SS-CLIR migration original profile SS-CLIR migration original profile response information element Operation of Interaction of SS-CLIR with ISI MM SS-CLIP and SS-CLIR parameter values (timers) Signalling protocol for the support of SS-COLP and SS-COLR SS-COLP and SS-COLR description SS-COLP description General SS-COLP services offered over the TNSS-SAP INFORM4 indication Parameter description SS-COLR description General SS-COLR services offered over the TNSS-SAP INVOCATION request INFORM5 indication INFORM6 indication Parameter description SS-COLP and SS-COLR operational requirements SS-COLP operational requirements Served user MS/LS Originating SwMI Terminating SwMI...31

5 5 EN V1.2.2 ( ) SS-COLR operational requirements Served user MS/LS Originating SwMI Terminating SwMI SS-COLP and SS-COLR coding requirements General on coding SS-COLP coding requirements SS-COLP PDU EXTERNAL NUMBER PDU INFORM4 COLP PRESENTATION PDU TETRA PDU information element coding Connected line identification information elements Numbering plan identifier information element Screening Indicator information element Type of Number information element Operations SS-COLR coding requirements SS-COLR PDUs INVOKE COLR INFORM5 COLR OVERRIDE PDU INFORM6 COLR OVERRIDE PDU TETRA PDU information element coding Connected user identification information elements SS-COLR requested by connected user information element Screening indicator air interface information element Operations SS-COLP and SS-COLR state definitions SS-COLP and SS-COLR signalling procedures SS-COLP Actions at the originating SwMI for SS-COLP Normal procedures Exceptional procedures Actions at the group controlling SwMI Actions at the terminating SwMI for SS-COLP Normal procedures Exceptional procedures SS-COLR Actions at the served/connected user for SS-COLR Actions at the originating SwMI for SS-COLR Actions at the group controlling SwMI for SS-COLR Actions at the terminating SwMI for SS-COLR Normal procedures Exceptional procedures SS-COLP and SS-COLR impact of interworking SS-COLP SS-COLR Protocol interactions between SS-COLP and SS-COLR and other supplementary services and ANFs Interaction of SS-COLP with SS-COLR Talking party identification With SS-COLP With SS-COLR Call forward unconditional With SS-COLP With SS-COLR Call authorized by dispatcher Discreet listening Ambience listening Interactions with ISI Mobility Management (ANF-ISIMM) of SS-COLP and SS-COLR SS-COLP Profiles SS-COLP information SS-COLP migration original profile SS-COLP migration original profile response information element...42

6 6 EN V1.2.2 ( ) Operations of SS-COLP with ISI Mobility Management (ANF-ISIMM) Profile sending requirements SS-COLR profiles SS-COLR information SS-COLR migration original profile SS-COLR migration original profile response information element Operations of SS-COLR with ISI Mobility Management (ANF-ISIMM) SS-COLP and SS-COLR parameter values (timers) Common SS-CI Elements General on common coding requirements PDU type information element contents...44 Annex A (rmative): External subscriber numbers in support of Call Identification Supplementary Services...45 A.1 External number PDU in support of SS-CLIP...45 A.2 External number parameters COLP PDU in support of SS-COLP...45 A.3 Information elements...46 A.3.1 Numbering plan identifier information element...46 A.3.2 Type of number information element...46 A.3.3 Screening indicators information element...46 Annex B (informative): Specification and Description Language (SDL) representation of procedures...47 B.1 SDL representation of SS-CLIP at the terminating SwMI...47 B.2 SDL representation of SS-CLIR procedure...49 B.3 SDL representation of SS-CLIR at the originating SwMI...50 B.4 SDL representation of SS-COLP at the originating SwMI...51 B.5 SDL representation of SS-COLR procedure...52 B.6 SDL representation of SS-COLR process at the originating SwMI...53 Annex C (informative): Bibliography...54 Annex D (informative): Change Requests...55 History...56

7 7 EN V1.2.2 ( ) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to. The information pertaining to these essential IPRs, if any, is publicly available for members and n-members, and can be found in SR : "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs tified to in respect of standards", which is available from the Secretariat. Latest updates are available on the Web server ( Pursuant to the IPR Policy, investigation, including IPR searches, has been carried out by. No guarantee can be given as to the existence of other IPRs t referenced in SR (or the updates on the Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by Technical Committee Terrestrial Trunked Radio (TETRA). The present document is part 12, sub-part 1 of a multi-part deliverable covering the Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D), as identified below: EN : EN : EN : "General network design"; "Air Interface (AI)"; "Interworking at the Inter-System Interface (ISI)"; ETS : "Gateways basic operation"; EN : EN : EN : "Peripheral Equipment Interface (PEI)"; "Security"; "General requirements for supplementary services"; EN : "Supplementary services stage 1"; EN : "Supplementary services stage 2"; EN : "Supplementary services stage 3"; EN : ETS : EN : EN : ETS : EN : ETS : EN : ETS : EN : "Call Identification (CI)"; "Call Report (CR)"; "Talking Party Identification (TPI)"; "Call Forwarding (CF)"; "List Search Call (LSC)"; "Call Authorized by Dispatcher (CAD)"; "Short Number Addressing (SNA)"; "Area Selection (AS)"; "Access Priority (AP)"; "Priority Call (PC)"; ETS : "Call Waiting (CW)"; EN : "Call Hold (HOLD)";

8 8 EN V1.2.2 ( ) ETS : "Call Completion to Busy Subscriber (CCBS)"; EN : EN : EN : EN : EN : "Late Entry (LE)"; "Pre-emptive Priority Call (PPC)"; "Include Call (IC)"; "Barring of Outgoing Calls (BOC)"; "Barring of Incoming Calls (BIC)"; ETS : "Discreet Listening (DL)"; EN : EN : "Ambience Listening (AL)"; "Dynamic Group Number Assignment (DGNA)"; ETS : "Call Completion on No Reply (CCNR)"; ETS : "Call Retention (CRT)"; ETS : "SDL model of the Air Interface (AI)"; ETS : "Protocol Implementation Conformance Statement (PICS) proforma specification"; TS : "TETRA frequency bands, duplex spacing and channel numbering"; TS : "Network Performance Metrics"; TS : "TETRA V+D and DMO specifications"; TS : "Air interface optimized applications". Part 10, sub-part 15 (Transfer of control), part 13 (SDL) and part 14 (PICS) of this multi-part deliverable are in status "historical" and are t maintained. National transposition dates Date of adoption of this EN: 17 August 2007 Date of latest anuncement of this EN (doa): 30 November 2007 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 31 May 2008 Date of withdrawal of any conflicting National Standard (dow): 31 May 2008 Introduction The present document corrects editorial mistakes identified in V1.2.1.

9 9 EN V1.2.2 ( ) 1 Scope The present document specifies the stage 3 description of the Supplementary Services CLIP, CLIR and COLP all part of Call Identification for the Terrestrial Trunked Radio (TETRA). The term "Line" is used in the present document to design either the line of a "LS" Line Station or by extension the TETRA Air Interface. NOTE 1: In order to use the same name for supplementary services as ECMA. Calling Line Identification Presentation (SS-CLIP) is a supplementary service which is offered to the called user and which provides the calling user identity. Connected Line Identification Presentation (SS-COLP) is a supplementary service which is offered to the calling user and which provides the connected user identity. Calling/connected Line Identification Restriction (SS-CLIR) is a supplementary service offered to a user to restrict presentation of that user's identity to ather user. Man-Machine Interface and charging principles are outside the scope of the present document. The supplementary service stage 3 description is preceded by the stage 1 and the stage 2 description of the service, according to the method described in ITU-T Recommendation I.130 [1]. The stage 1 description specifies the service from the user's point of view. The stage 2 description identifies the functional capabilities of each SS and the information flows needed to support the supplementary service as specified in its stage 1 description. The present stage 3 description specifies the protocols at the air interface and at the various Inter-System Interfaces (ISI) to support each Supplementary Service. NOTE 2: According to ITU-T Recommendation I.130 [1], the stage 3 description of any telecommunication service addresses the network implementation aspects. Consequently it comprises two steps: the specifications of all protocols at the various reference points involved in any of the service procedures (tably the service operation) are the first step of the stage 3 description, and the specifications of the functions of the corresponding network entities are its second step. The latter have t been provided since they can be derived from the specification of the functional entity actions in the stage 2 description. The present document is applicable to Voice plus Data individual call or group call; the present document is neither applicable to Packet Mode of Operation r to DMO; more specifically to the following entities: - the MS/LS of either the calling user or the connected user during an individual call or a group call; - the originating Switching and Management Infrastructure (SwMI) in an individual call or a group call; - the group controlling SwMI and the participating SwMI for a group call; - the terminating SwMI in an individual call; - the interworking SwMI for either an individual call or a group call.

10 10 EN V1.2.2 ( ) 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication and/or edition number or version number) or n-specific. For a specific reference, subsequent revisions do t apply. For a n-specific reference, the latest version applies. Referenced documents which are t found to be publicly available in the expected location might be found at While any hyperlinks included in this clause were valid at the time of publication cant guarantee their long term validity. [1] ITU-T Recommendation I.130 (1988): "Method for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN". [2] EN : "Private Integrated Services Network (PISN); Service description, functional capabilities and information flows; Circuit-mode 64 kbit/s bearer services [ISO/IEC (2000) modified]". [3] EN : "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 1: General network design". [4] EN : "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air Interface (AI)". [5] EN : "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI)". [6] EN : "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 9: General requirements for supplementary services". [7] EN : "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary services stage 1; Sub-part 1: Call Identification (CI)". [8] EN : "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 1: Call Identification (CI)". [9] Standard ECMA-148: "Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Identification Supplementary Services (ISSD)". [10] ITU-T Recommendation Z.100: "Specification and Description Language (SDL)". [11] ITU-T Recommendation E.164: "The international public telecommunication numbering plan". [12] Void. [13] ITU-T Recommendation X.121: "International numbering plan for public data networks". [14] EN : "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 2: Additional Network Feature Individual Call (ANF-ISIIC)". [15] EN : "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 3: Additional Network Feature Group Call (ANF-ISIGC)". [16] EN : "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 5: Additional Network Feature for Mobility Management (ANF-ISIMM)".

11 11 EN V1.2.2 ( ) [17] ETS : "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary services stage 1; Sub-part 3: Talking Party Identification (TPI)". 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: affected user: in the case of SS-CLIP it is the calling user (even in a group), in the case of SS-COLP it is the connected user, in the case of SS-CLIR it is the connected user and in the case of SS-COLR it is the calling user calling user identity: See in EN [3], clause 7.2 where ITSI and SSI are defined. When the connected user and the calling user belongs to the same home SwMI, and according to clause of EN [6], this identity may be given using only the SSI part of the ITSI. In all other cases, the identity will be the full ITSI. In the case of a group call, the calling user identity is the individual ITSI setting up the group call. connected user: user that answers a call Different from ECMA-148 [9] and may be different from called user. connected user identity: identity of the connected user for identification purposes NOTE 1: As defined in EN [3], clause 7.2 where ITSI and SSI are defined. NOTE 2: When the connected user and the calling user belongs to the same home SwMI, and according to clause of EN [6], this identity may be given using only the SSI part of the ITSI. In all other cases, the identity will be the full ITSI. In the case of a group call, the connected user identity is defined as the GTSI. served user: served user in the case of SS-CLIP is the connected user; the served user in the case of SS-COLP is the calling user; in the ECMA termilogy, SS-CLIR includes the SS-CLIR restriction of SS-CLIP and the SS-COLR restriction of SS-COLP In the present document SS-CLIR and SS-COLR will be used preferably to a generic SS-CLIR term; thus in the case of SS-CLIR as applicable to the present document, the served user is the calling user and in the case of SS-COLR, the served user is the connected user. 3.2 Symbols For the purposes of the present document, the symbols defined in ITU-T Recommendation Z.100 [10] relating to SDL apply. 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: ANF-ISIGC ANF-ISIIC ANF-ISIMM CC CCA Additional Network Feature - Inter-System Interface Group Call Additional Network Feature - Inter-System Interface Individual Call Additional Network Feature - Inter-System Interface Mobility Management basic service Call Control functional entity basic service Call Control functional entity Agent CC and CCA are applied as defined in EN [2]. CGLI CLIP CLIR CallinG Line Identification (ECMA) Calling Line Identification Presentation Calling Line Identification Restriction

12 12 EN V1.2.2 ( ) CMCE COLI COLP COLR DMO ECMA GTSI ISI ITSI LS MS PDU SDL SS Circuit Mode Control Entity COnnected Line Identification COnnected Line Presentation COnnected Line Restriction Direct Mode Operation European Computer Manufacturers Association Group TETRA Subscriber Identity Inter System Interface Individual TETRA Subscriber Identity Line Station Mobile Station Protocol Data Unit (Functional) Specification and Description Language Supplementary Service The abbreviation SS is only used when referring to a specific supplementary service. SSI SwMI TNSS-SAP Short Subscriber Identity Switching and Management Infrastructure Tetra Network layer Supplementary Service- Service Access Point 4 Signalling protocol for the support of SS-CLIP and SS-CLIR 4.1 SS-CLIP and SS-CLIR description SS-CLIP service description General SS-CLIP is a supplementary service offered to the connected user; it provides the calling user's identity (without any calling user's sub address information in the case of TETRA call) to the connected user. The information presented to the connected user shall consist of the identity of the calling user in a form sufficient to return the call (SSI, ITSI for TETRA call; National, International number for interworking call). This clause describes SS-CLIP specific services offered by the Circuit Mode Control Entity (CMCE) at the Supplementary Services service access point (TNSS-SAP) of the TETRA voice plus data layer 3 service boundary in a TETRA Mobile Station (MS) or TETRA Line Station (LS). The SS-CLIP service access point is used in conformance testing as a rmative boundary in MSs and LSs. All the service primitives have been shown without a TNSS-CLIP-prefix SS-CLIP services offered over the TNSS-SAP As man-machine interface or user applications are outside the scope of the present document service primitives are used to define information exchange to and from the standardized part of the MS/LS. Those primitives may be only indirectly accessible. The SS-CLIP service primitive at the served user MS/LS TNSS-SAP shall be: INFORM1 indication.

13 13 EN V1.2.2 ( ) INFORM1 indication The INFORM1 indication primitive shall be sent to the connected user application by the MS/LS CMCE over TNSS-SAP as a result of SS-CLIP operation. The INFORM1 indication primitive shall contain the SS-CLIP parameters listed in table 1. Normal use of SS-CLIP INFORM1 will be with SS-CLIR t invoked, override t implemented or t invoked. Table 1: Parameters for the primitive INFORM1 indication Parameter Indication SS-CLIR invoked for calling user M CallinG Line Identity (CGLI) C (see te 1) SS-CLIR overridden by connected user O (see te 2) NOTE 1: Conditional on SS-CLIR t having been invoked for calling user. NOTE 2: When override is implemented, INFORM1 may be presented with the indication that the identity of the calling user is provided due to override Parameter description SS-CLIR invoked for calling user: - 00 t implemented or default mode; - 10 restriction; - 11 restriction. SS-CLIR overridden by connected user: - 1 overridden; - 0 t overridden. Calling Line Identity: - Short Subscriber Identity (SSI); - Short Subscriber Identity (SSI) + Address extension; - Gateway identity; - External subscriber number. The numbering plan, the type of number and the screening indicator are available to the connected user SwMI, t to the connected user application SS-CLIR description General SS-CLIR is a supplementary service offered to the calling user. It restricts presentation of the calling user's identity to the connected user. When SS-CLIR has been invoked for a call, the originating SwMI shall provide the destination SwMI with the indication that the calling user's identity is t allowed to be presented to the connected user (exception for the case of override). In this case calling user identity shall be included in the SET-UP PDU sent to the connected user. Whether or t SS-CLIR has been invoked for that call, the calling user identity within SwMIs or over the ISI as part of the basic (individual or group) call procedures.

14 14 EN V1.2.2 ( ) This clause describes SS-CLIR specific services offered by the Circuit Mode Control Entity (CMCE) at the Supplementary Services service access point (TNSS-SAP) of the TETRA voice plus data layer 3 service boundary in a TETRA Mobile Station (MS) or TETRA Line Station (LS). The SS-CLIR service access point is used in conformance testing as a rmative boundary in MSs and LSs. All the service primitives have been shown without a TNSS-CLIR-prefix SS-CLIR services offered over the TNSS-SAP As man-machine interface or user applications are outside the scope of the present document service primitives are used to define information exchange to and from the standardized part of the MS/LS. Those primitives may be only indirectly accessible. The SS-CLIR service primitives at the served user MS/LS TNSS-SAP shall be: - INVOCATION request; - INFORM2 indication (SS-CLIR overridden); - INFORM3 indication (SS-CLIR overridden) INVOCATION request The INVOCATION request primitive shall be sent by the calling user application to the MS/LS CMCE over TNSS-SAP to invoke SS-CLIR in the case where SS-CLIR is provided with a temporary mode provision (n permanent). The INVOCATION request primitive shall contain the SS-CLIR parameters listed in table 2. Table 2: Parameters for the primitive INVOCATION request Parameter SS-CLIR invocation by calling user Request M INFORM2 indication The INFORM2 indication primitive shall be sent to the calling user application by the MS/LS CMCE over TNSS-SAP as a result of SS-CLIR operation. The INFORM2 indication primitive shall contain the SS-CLIR parameters listed in table 3. This INFORM2 indication is presented only in the case has taken place for the call. Table 3: Parameters for the primitive INFORM2 indication Parameter SS-CLIR invoked by calling user Call reference (identifier) SS-CLIR Overridden by Connected User Indication M M M INFORM3 indication The INFORM3 indication primitive may be sent to the connected user application by the MS/LS CMCE over TNSS-SAP as a result of SS-CLIR operation to indicate that presentation of CGLI is due to override. In the case where this primitive is implemented, the INFORM3 indication primitive shall contain the SS-CLIR parameters listed in table 1 (identical to SS-CLIP when CGLI presentation result from an override of SS-CLIR). NOTE 1: This primitive exists only if SS-CLIP has been invoked. NOTE 2: In the case where override is t implemented, there will be one INFORM1 primitive for SS-CLIP, one INFORM2 primitive for SS-CLIR and INFORM3 primitive.

15 15 EN V1.2.2 ( ) Parameter description SS-CLIR invocation by calling user: - SS-CLIR t implemented or invoked according to default mode; - restriction; - restriction. SS-CLIR overridden by connected user: - overridden; - t overridden; Calling Line Identity: - Short Subscriber Identity (SSI); - Short Subscriber Identity (SSI) + Address extension; - Gateway identity; - External subscriber number. The numbering plan, the type of number and the screening indicator are available to the connected user SwMI, t to the connected user application. 4.2 SS-CLIP and SS-CLIR operational requirements SS-CLIP operational requirements Served user MS/LS The served user MS/LS shall comply with the requirements in clause 14 of EN [4] which apply to the teleservices and bearer services which it supports for incoming calls Originating SwMI In case of an individual call over the ISI, the originating SwMI shall support the requirements set in EN [14] for establishing an outgoing call. In case of a group call over the ISI, the originating SwMI shall support the requirements set in EN [15] for establishing an outgoing call Group controlling SwMI If the served user MS/LS is registered in the group controlling SwMI, that SwMI shall support this MS/LS complying with the requirements for participating in a group call set in clause 14 of EN [4]. If the served user MS/LSs is t registered in the group controlling SwMI, that SwMI shall comply with the ISI requirements necessary to establish group calls, set in EN [15] Terminating SwMI The terminating SwMI is also the served user SwMI. That SwMI shall support the served user MS/LS complying with the requirements for individual calls set in clause 14 of EN [14]. It shall also support the served user MS/LS complying with the requirements for group call set in EN [15] if it is different from the group controlling SwMI.

16 16 EN V1.2.2 ( ) SS-CLIR operational requirements Served user MS/LS The served user MS/LS shall comply with the requirements in clause 14 of EN [4] which apply to the teleservices and bearer services which it supports. In addition it shall comply with the relevant call related requirements in clauses 7 and 11 of EN [6] restricted to outgoing calls Originating SwMI The originating SwMI is also the served user SwMI. That SwMI shall support the served user MS/LS complying with the requirements for individual or group calls in clause 14 of EN [4]. If the call is over ISI, the served user SwMI/originating SwMI shall also comply with the corresponding requirements for establishing outgoing calls set in EN [14] for individual calls and in EN [15] for group calls. It shall also comply with the relevant call related requirements in clauses 9 to 11 of EN [6] for outgoing calls Group controlling SwMI The group controlling SwMI shall support the group call set-up by complying with the group call requirements contained in clause 14 of EN [4]. In the case where the group controlling SwMI is different from the terminating SwMI, it shall also comply with the requirements contained in group calls over ISI EN [15] Terminating SwMI For an individual call, that SwMI shall support the possibility for the connected user MS/LS to participate in the call as defined in EN [4] for individual calls. That SwMI shall also comply with the relevant call related requirements in clauses 7 to 11 of EN [6]. The same shall apply for group calls if that SwMI is different from the group controlling SwMI. If the call is over the ISI, the connected user SwMI shall comply with the corresponding ISI requirements, set in EN [14] for individual calls and in EN [15] for group calls. It shall also comply with the relevant call related requirements in clauses 9 to 11 of EN [6] for outgoing calls. 4.3 SS-CLIP and SS-CLIR coding requirements The purpose of the calling user identity information element is to identify the origin of a call. In the case of a group call, the calling user identity information shall be the identity of the user originating the group call. EN [3] clause 7.2 gives the coding for the calling user identity which is required to support this service General on coding The information contained in the description tables correspond to the following key: - Length: length of the information element in bits; - Type: element type (1, 2 or 3) described in EN [4], clause 14.7; - C/O/M: conditional/optional/mandatory; - Remark: comment or reference to te(s).

17 17 EN V1.2.2 ( ) SS-CLIP and SS-CLIR PDUs U-SETUP PDU CLIR PDU shall be encoded as an information element in the U-SETUP PDU as defined in clause EXTERNAL NUMBER PDU Potential additional type information of the external subscriber number is presented in clause A TETRA PDU information element coding for SS-CLIP and SS-CLIR U-SETUP CLIR (RESTRICT) The U-SETUP CLIR (RESTRICT) information element shall be as specified in table 4. Table 4: U-SETUP CLIR (RESTRICT) information element content CLIR (RESTRICT) bits Usage 00 2 Not implemented or use default mode 01 2 Reserved 10 2 SS-CLIR invoked; restriction for that call 11 2 SS-CLIR invoked; Presentation restricted Notification indicator information element See clause A Numbering plan identifier See clause A Type of number See clause A Screening indicator See clause A INFORM2 CLIR OVERRIDE PDU INFORM2 CLIR OVERRIDE PDU is sent to the calling user, refer to table 5. It indicates that the connected user has overridden its invocation for SS-CLIR and that its identity has been presented to the connected user. Table 5: INFORM2 CLIR OVERRIDE PDU contents Information element Length Type C/O/M Remark SS-Type 6 1 M Defined in EN [6] SS-CI PDU type 5 1 M INFORM2 CLIR OVERRIDE

18 18 EN V1.2.2 ( ) INFORM3 CLIR OVERRIDE PDU INFORM3 CLIR OVERRIDE PDU is sent to the connected user, refer to table 6. It indicates that the presentation of the calling user address, in the calling address fields of the D-SETUP, is due to override. Table 6: INFORM3 CLIR OVERRIDE PDU contents Information element Length Type C/O/M Remark SS-Type 6 1 M Defined in EN [6] SS-CI PDU type 5 1 M INFORM3 CLIR OVERRIDE SS-CLIR PDU Type SS-CLIR-PDU type indicates the type of the SS-CLIR PDU as defined in table 7. Table 7: SS-CLIR PDU type information element contents Information element Length Value Remark Refer EN [6] Refer EN [6] EXTERNAL NUMBER See clause A.3 Reserved INFORM1 (see te) Reserved INFORM2 (see te) Reserved INFORM3 (see te) Those values are reserved in the case the CLIR bits and the tification values cant be changed Messages All the information for SS-CLIP is sent in the D-SETUP PDU using the optional "calling_party" and "external_subscriber_number" information elements. The absence of the SS-CLIP information in the D-SETUP indicates that presentation has been restricted. Information for SS-CLIR is sent in the U-SETUP PDU using a specific information element "CLIR control". The SS-PDU INFORM2 CLIR OVERRIDE may be passed back to the calling user in a D-CALL-PROCEEDING, D-ALERT, D-CONNECT PDU, or D-INFO PDU. The SS-PDU INFORM3 CLIR OVERRIDE. may be sent with the D-SETUP. 4.4 SS-CLIP and SS-CLIR state definitions SS-CLIP state definitions States at the served user MS/LS There are SS-CLIP conceptual states within the served user MS/LS in association with a particular individual call or group call. The SS-CLIP information sent to the served user MS/LS is simply for information, specific SS-CLIP action being defined for this MS/LS as a result of the reception of this information.

19 19 EN V1.2.2 ( ) States for SS-CLIP invocation and operation at the group controlling SwMI The procedures for the group controlling SwMI for invocation and operation of SS-CLIP are written in terms of the conceptual states defined below existing within the SS-CLIP control application in that SwMI in association with a particular group call. The definition of the SS-CLIP invocation states for the group controlling SwMI (in association with a particular group call) is derived from the following SS-CLIP group controlling basic state: - SS-CLIP-Idle (assume activation at subscription). SS-CLIP is invoked with option as soon as call set up is presented States for SS-CLIP invocation and operation at the served user SwMI The invocation and operation procedures for the served user SwMI are written in terms of the following conceptual states existing within the SS-TPI control application in that SwMI in association with a particular individual call. There are activation, deactivation, definition or interrogation procedures defined for the served user SwMI. - SS-CLIP-Idle (activated at subscription). SS-CLIP is invoked with option as soon as call set up is presented SS-CLIR state definitions States at the served user MS/LS There are SS-CLIR conceptual states within the served user MS/LS in association with a particular individual call or group call. The SS-CLIR invocation request is sent on a call per call basis and does t result in a state change of the SS-CLIR process. The eventual information "OVERRIDDEN" provided to the served user MS/LS is simply for information, specific SS-CLIR action being defined for this MS/LS as a result of the reception of this information States for SS-CLIR invocation and operation at the group controlling SwMI The procedures for the group controlling SwMI for invocation and operation of SS-CLIR are written in terms of the conceptual states defined below existing within the SS-CLIR control application in that SwMI in association with a particular group call. The definition of the SS-CLIR invocation states for the group controlling SwMI (in association with a particular group call) is derived from the following SS-CLIR group controlling basic state: - SS-CLIR-Idle (assume activation at subscription). SS-CLIR is either invoked with option as soon as call set up is presented due to permanent mode or is invoked on a call per call basis States for SS-CLIR invocation and operation at the served user SwMI The invocation and operation procedures for the served user SwMI are written in terms of the following conceptual states existing within the SS-TPI control application in that SwMI in association with a particular individual call. There are activation, deactivation, definition or interrogation procedures defined for the served user SwMI. - SS-CLIR-Idle (activated at provision). SS-CLIR is either invoked with option as soon as call set up is presented due to permanent mode or is invoked on a call per call basis.

20 20 EN V1.2.2 ( ) 4.5 SS-CLIP and SS-CLIR signalling procedures SS-CLIP signalling procedures Examples of message sequences are shown in stage 2 EN [8] Actions at the originating SwMI for SS-CLIP The originating SwMI may either be the TETRA calling user SwMI or the Gateway SwMI Normal procedures All information pertaining to the CLIP supplementary service shall be inserted in the SETUP message sent as part of the basic individual or group call set-up according to EN [4], clause 14. This applies regardless of whether SS-CLIR is invoked or t. The calling line identity shall always be the identity associated with the access (in which the call was generated) in the originating SwMI; the identity shall t be provided by the user in the case of TETRA but by the originating SwMI. If the SETUP message contains a wrong calling identity information element, the originating SwMI shall screen the identity and rejects the U-SETUP call set-up. The presentation RESTRICT indicator also called RESTRICT indicator, as determined by the SS-CLIR procedure described below shall be forwarded to the terminating SwMI in association with the basic call request Exceptional procedures Not applicable Actions at the terminating for SS-CLIP The SDL representation of procedures at the Terminating SwMI is shown in figure B.1. In all what follows the terminating SwMI may mean the group controlling SwMI in case of a group call Normal procedures The terminating SwMI may either be the connected user SwMI or the gateway SwMI in which case it is terminating from a TETRA network point of view; the latter will be described in the interworking considerations. The terminating SwMI shall check if SS-CLIP has been activated for the called user. If and presentation is allowed according to the presentation RESTRICT indicator supplied together with the calling identity, the terminating SwMI shall include the calling user identity information element in the D-SETUP PDU sent to the called user. In case of an intra-tetra call, the presentation RESTRICT indicator is part of the basic call ANF-ISIIC SETUP PDU and is carried as the bit CLIR. If presentation is t allowed according to the presentation RESTRICT indicator supplied together with the calling number, the terminating SwMI shall present to the called user the tification indicator corresponding to: - presentation RESTRICT indicator set to "presentation restricted". If the called user is t provided with the CLIP supplementary service, then the calling user identity shall t be included in the SETUP message sent to the called user. If presentation is restricted but the connected user has the override privilege indicated in the terminating SwMI, if the call is an individual call and t a group call and if the calling identity is available, the terminating SwMI shall include the calling user identity information element in the D-SETUP PDU sent to the called user.

21 21 EN V1.2.2 ( ) Actions at the group controlling SwMI Shall be identical to the actions described for the terminating SwMI Actions at the participating SwMI Shall be identical to the actions described for the terminating SwMI Exceptional procedures Not applicable SS-CLIR signalling procedures Actions at the originating SwMI for SS-CLIR The originating SwMI may either be the TETRA calling user SwMI or the Gateway SwMI. In all what follows, the originating SwMI may mean the group controlling SwMI in case of group call if the calling user is registered in the group home SwMI. It is assumed that all group members have override capability. A procedure where each group member would have a different override is t possible with the present group call set-up Normal procedures If the calling user has subscribed to the SS-CLIR permanent mode, then the originating SwMI shall igre the presentation RESTRICT indicator received in the SETUP message. The originating SwMI shall set the presentation RESTRICT indicator to "presentation restricted". All information pertaining to the CLIR supplementary service including the calling line identity shall be inserted in the ANF-ISIIC SETUP PDU sent as part of the basic individual call set-up. If the SS-CLIR is requested by the calling user on a per-call basis, and the presentation RESTRICT indicator is included in the U-SETUP message, the originating SwMI shall set in the ISI SETUP message the presentation RESTRICT indicator according to that in the received calling user SETUP. If the SS-CLIR is requested by the user on a per-call basis, and presentation RESTRICT indicator is included in the U-SETUP message, then the originating SwMI shall set the presentation RESTRICT indicator to the subscribed default value. The presentation RESTRICT indicator shall be forwarded to the terminating SwMI in association with the basic call request. In the case where override privilege has been exercised by the connected user, the originating SwMI shall inform the calling user that SS-CLIR has been overridden Exceptional procedures Not applicable Actions at the terminating SwMI The terminating SwMI may either be the called user SwMI or the gateway SwMI in which case it is terminating from a TETRA network point of view. The SDL representation of SS-CLIR procedure is shown in figure B.2. The SDL representation of procedures at the Terminating SwMI is shown in figure B.3.

22 22 EN V1.2.2 ( ) If presentation of the CGLI is t allowed according to the presentation RESTRICT indicator supplied together with the calling identity due to the invocation of SS-CLIR, the terminating SwMI shall: - t include the calling user identity in the D-SETUP; - include in the tification to the called user that SS-CLIR has been invoked. If SS-CLIP is t subscribed to and regardless of whether SS-CLIR is invoked for that call or t, the terminating SwMI shall: - t include the calling user identity in the D-SETUP; - t include any tification to the connected user that SS-CLIP has t been subscribed. If presentation of the CGLI is restricted but the connected user has the override capability, the terminating SwMI shall: - include the identity digits in the calling user identity message; - generate an INFORM2 PDU to inform the calling user that its invocation for SS-CLIR has been overridden by the connected user and that its identity has been presented to the connected user. The terminating SwMI may also generate an INFORM3 PDU to inform the connected user that presentation of CGLI is due to override; the content of INFORM3 is identical to the content of INFORM Exceptional procedures Not applicable SS-CLIP and SS-CLIR impact of interworking SS-CLIP On calls incoming from n TETRA networks, the calling number may be delivered to the gateway SwMI without an indication of calling line identity restriction. In this case, the gateway SwMI shall present the calling identity information element as described below. The presentation indicators associated with the calling identity in the case of interworking with n TETRA networks received at the originating SwMI shall be passed transparently to the terminating SwMI (called user SwMI) as part of the ISI SETUP. The screening indicator, the type of numbering and the numbering plan associated with the calling identity (External Subscriber Number) shall be carried over ISI to the served user SwMI, t to the end user. The numbering plan identifier, to be indicated with the calling user identity information element, sent by the gateway SwMI to the terminating SwMI shall be either TETRA numbering plan, ITU-T Recommendations E.164 [11], X.121 [13], or unkwn. Where the external subscriber number included by the calling user SwMI is complete, the type of number to be sent by the gateway SwMI to the terminating SwMI shall be one of the following: - Local; - National number; - International number; - Unkwn.

23 23 EN V1.2.2 ( ) Where a partial calling user ID is included by the calling user network, the calling user identity information element shall be set to "unkwn". If neither the calling user identity r an indication that the presentation is restricted is available at the terminating SwMI, the terminating SwMI shall: - present to the called user screening indicator set to "number t available due to interworking"; - include the gateway identity digits field in the calling user information element; - include a value 0 for the external subscriber number length (indicating external number t available). For call originating outside TETRA, the value of the screening indicator set by the gateway SwMI shall be as provided by the interworking network in the case it is provided or set to network provided by the gateway SwMI in the case it is t provided by the interworking network. In the case of interworking, for call originating outside of TETRA, where the calling user provides partial calling identity information even though the digit sequence is a valid one, the gateway SwMI shall either proceed with the call without indicating the calling identity and indicating "number t available due to interworking" or reject the call set up. The presentation RESTRICT indicator, as determined by the SS-CLIR procedure received from the interworking network and described below shall be forwarded to the terminating SwMI in association with the basic call request. The case where the terminating SwMI is requested by the interworking network to provide the calling user identity is outside the scope of the present document. Conversion from the TETRA numbering plan to an external numbering plan would be needed SS-CLIR On calls to n TETRA networks, it cant be assured that a restriction indicator can be carried to the destination network. As an implementation option, the gateway TETRA SwMI may restrict any information identifying the calling user from being forwarded to the destination network when the SS-CLIR is applicable. On calls incoming from n TETRA networks, the calling user number may be delivered to the SwMI gateway with an indication of calling line identity restriction. In this case, the originating SwMI which is also the gateway SwMI shall use the rmal procedure of the SS-CLIR originating SwMI. If presentation of the CGLI is t allowed according to the presentation RESTRICT indicator supplied together with the calling identity due to the invocation of SS-CLIR by the external network calling user, and if SS-CLIP has been subscribed to, the terminating SwMI shall: - include the CGLI information element in the D-SETUP message; - set the presentation RESTRICT indicator to presentation restricted in the tification indicator; - t include the external subscriber number; - include the gateway SwMI identity. The case of override in interworking is outside the scope of the present document.